This site is mobile accessible. Press the "Tap Here" button to use a different font-size.
Smartphone icons created by Freepik - Flaticon
The JavaScript Math object allows you to perform mathematical tasks on numbers.
Math.PI; // returns 3.141592653589793
returns the value of x rounded to its nearest integer:
Math.round(4.7); // returns 5 Math.round(4.4); // returns 4
returns the value of x to the power of y:
Math.pow(8, 2); // returns 64
returns the square root of x:
Math.sqrt(64); // returns 8
returns the absolute (positive) value of x:
Math.abs(x) returns the absolute (positive) value of x:
returns the value of x rounded up to its nearest integer:
Math.ceil(4.4); // returns 5
returns the value of x rounded down to its nearest integer:
Math.floor(4.7); // returns 4
Math.sin(90 * Math.PI / 180); // returns 1 (the sine of 90 degrees)
Math.cos(0 * Math.PI / 180); // returns 1 (the cos of 0 degrees)
and can be used to find the lowest or highest value in a list of arguments:
Math.min(0, 150, 30, 20, -8, -200); // returns -200
Math.max(0, 150, 30, 20, -8, -200); // returns 150
returns a random number between 0 (inclusive), and 1 (exclusive):
Math.random(); // returns a random number
You will learn more about in the next chapter of this tutorial.
JavaScript provides 8 mathematical constants that can be accessed with the Math object:
Math.E // returns Euler's number Math.PI // returns PI Math.SQRT2 // returns the square root of 2 Math.SQRT1_2 // returns the square root of 1/2 Math.LN2 // returns the natural logarithm of 2 Math.LN10 // returns the natural logarithm of 10 Math.LOG2E // returns base 2 logarithm of E Math.LOG10E // returns base 10 logarithm of E
| Method | Description |
|---|---|
| abs(x) | Returns the absolute value of x |
| acos(x) | Returns the arccosine of x, in radians |
| acosh(x) | Returns the hyperbolic arccosine of x |
| asin(x) | Returns the arcsine of x, in radians |
| asinh(x) | Returns the hyperbolic arcsine of x |
| atan(x) | Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians |
| atan2(y, x) | Returns the arctangent of the quotient of its arguments |
| atanh(x) | Returns the hyperbolic arctangent of x |
| cbrt(x) | Returns the cubic root of x |
| ceil(x) | Returns x, rounded upwards to the nearest integer |
| cos(x) | Returns the cosine of x (x is in radians) |
| cosh(x) | Returns the hyperbolic cosine of x |
| exp(x) | Returns the value of Ex |
| floor(x) | Returns x, rounded downwards to the nearest integer |
| log(x) | Returns the natural logarithm (base E) of x |
| max(x, y, z, ..., n) | Returns the number with the highest value |
| min(x, y, z, ..., n) | Returns the number with the lowest value |
| pow(x, y) | Returns the value of x to the power of y |
| random() | Returns a random number between 0 and 1 |
| round(x) | Rounds x to the nearest integer |
| sin(x) | Returns the sine of x (x is in radians) |
| sinh(x) | Returns the hyperbolic sine of x |
| sqrt(x) | Returns the square root of x |
| tan(x) | Returns the tangent of an angle |
| tanh(x) | Returns the hyperbolic tangent of a number |
| trunc(x) | Returns the integer part of a number (x) |
Eventually the navigation links, above, will be replaced by these (previous) and (next) buttons below.
JavaScript icons used in the buttons provided by ICONS8.COM. Smartphone icons created by Freepik - Flaticon